#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
int mainpjsh()
{
	int a[10];
	int b=0;
	for (int i = 0; i < 10; i++)
	{
		scanf("%d", &a[i]);
		b = b + a[i];
	}
	b = b / 10;
	printf("%d",b);
	return 0;
}